1 files changed, 3 insertions, 3 deletions
diff --git a/lib/internal/process.js b/lib/internal/process.js
index 21a74abba7..ff5ea58dda 100644
--- a/lib/internal/process.js
+++ b/lib/internal/process.js
@@ -28,12 +28,12 @@ function setup_cpuUsage() {
     if (prevValue) {
       if (!previousValueIsValid(prevValue.user)) {
         throw new errors.TypeError('ERR_INVALID_ARG_TYPE',
-                                   'preValue.user', 'Number');
+                                   'preValue.user', 'number');
       }
 
       if (!previousValueIsValid(prevValue.system)) {
         throw new errors.TypeError('ERR_INVALID_ARG_TYPE',
-                                   'preValue.system', 'Number');
+                                   'preValue.system', 'number');
       }
     }
 
@@ -154,7 +154,7 @@ function setupKillAndExit() {
 
     // eslint-disable-next-line eqeqeq
     if (pid != (pid | 0)) {
-      throw new errors.TypeError('ERR_INVALID_ARG_TYPE', 'pid', 'Number');
+      throw new errors.TypeError('ERR_INVALID_ARG_TYPE', 'pid', 'number');
     }
 
     // preserve null signal